The default OpenJDK is now in version 12 on CentOS, therefore the next Docker images based on CentOS will be using this JDK (instead of OpenJDK 1.8).
As a first step, this will be the case only on the alpha and alpha-light images which include Simplicité version 4.0.P24a (master branch).
Please report any issue you may experience with this up-to-date OpenJDK